String « MVC « Spring Q&A

1. Spring - binding to an object rather than a String or primitive

Let's say I have the following command object:

class BreakfastSelectCommand{
 List<Breakfast> possibleBreakfasts;
 Breakfast selectedBreakfast;
How can I have spring populate "selectedBreakfast" with a breakfast from the list? I was figuring I'd do something like ...

2. Converting from String to custom Object for Spring MVC form Data binding?

I am using Spring MVC's SimpleFormController in conjunction with Spring MVC's form JTL to create a form to edit a Generic object. On my form I have a drop down where the ...

3. Can spring mvc trim all strings obtained from forms?

I know struts2 default config will trim all strings obtained from forms. For example: I type

"   whatever "
in a form and submit, I will get
The string ...

4. What are the best Spring converter strategies in the case of a String to convert to a set of object?

I have the following (simplified) form in one of my view:

<form:form commandName="entry" method="POST">
  <form:input type="text" path="name"/>
  <form:input type="text" path="tags" />
  <input type="submit" value="Submit"/>
Which is going to be bind ...

5. NumberFormat for list of Hashmaps - need different formatters to be applied depending on another member variable

I am using Spring MVC as a front-end to my Spring app. I have an object which is put into the model, which contains all of the values for my ...

6. Why does @RequestParameter String someValue in Spring 3 return 2x values?

Let's say I have this method in my controller:

@RequestMapping(value="/home", method=RequestMethod.GET)
public void captcha(@RequestParam String someValue, HttpServletResponse response)
Why does the result of this request:
return this?
Using an Int only ...

7. Spring MVC 3.0: Is String the preferred type to be used for @PathVariable?

Pardon me for asking such a simple question here as I'm new to Spring MVC 3.0. I have been reading the documentation from spring source website a few times. Here's a ...

8. Why do I get IllegalArgumentException Cannot convert value of type String to required type Product, in Spring?

I receive the exception

Failed to convert property value of type [java.lang.String] to required type [beans.Product] for property product; nested exception is java.lang.IllegalArgumentException: ...

9. Spring new object Binding Exception: Cannot convert String to long (primitive type)

OS: Windows vista, Framework: Spring (latest), JQuery (latest), Hibernate (latest). I have a domain class with primary key as long id.

public class domain{
    private long id;

10. Question about spring @ModelAttribute taking any arbitrary string

While taking lessons in spring3 I coded a sample from a tutorial. I created a controller as below

package my.spring.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import my.spring.form.Contact;

public class ContactController {
 @RequestMapping(value ="/addContact",method =RequestMethod.POST)

11. Why can I not register a PropertyEditor for String in Spring MVC?

I'm using Spring 3.0.3. I've enabled the default ConversionService by adding this line to my Spring configuration XML.

I'm also using custom PropertyEditor's for certain data types, so I've registered them for ...

12. Rendering Views as String with Spring MVC and Apache Tiles

I am trying to reuse some of my tiles in a controller which is returning a json response to the client. I would like to return a json response similar to ...

13. Converting empty String to null Date object with Spring

I have a form field that should be converted to a Date object, as follows:

<form:input path="date" />
But I want to get a null value when this field is empty, instead of ...

14. How Do You Configure Spring MVC @PathVariables to Accept Strings Containing Dashes?

Given the following request mapping on a Spring MVC controller:

@RequestMapping(method=GET, value="/users/{name}")
ModelAndView findUser(@PathVariable String name) {
How can I make it accept a @PathVariable with a dash in it? The ...

15. String to ArrayList

I am implementing Spring MVC. Different String values are displayed on the jsp page. Help me move those String values to ArrayList to reduce that bulky code.

 Public Class Controller{

16. list of string not displayed

I use spring 3. I'm trying to display a value of an object in a jsp.

public class UserForm implements Serializable {

    private List<String> values;
    private ...

17. Spring MVC 3.0 Model attribute is unexpectedly converted from List to String in JSP

Using Spring MVC 3.0, from my controller when I add a List object as an attribute to my model, it gets converted to a String in my JSP template. Here's a simplified ...

18. Output pre-json encoded string to spring framework

I have a json:object I'm serving. As part of that json document, I want to serve some pre-encoded json. unfortunately, once served, the pre-encoded json is re-encoded. Is ...

19. Unwanted comma-splitting when binding string (from list box) to list in Spring

I have a standard multi-select list box bound to a List property of an object. The problem is that when a single value in the list box is selected, and that value ...

20. Spring's @RequestBody providing empty string on POST

I have an application with Spring 3.0.5.RELEASE trying to get the full content of a post using @RequestBody. The method is called, but the string passed is always empty. I have ...

21. How do I convert a ModelAndView object into a rendered string?

I'd like to use the output of one controller as a model object in another. The Spring ModelAndView class doesn't have a render() method. Is there any way of ...

22. Spring form:options title from String

Pretty simple question. If I have a list of strings, which I render in a dropdown through Springs form:options tag, how do I set the value of the title property to ...

23. How can I set a custom PropertyEditorSupport.setAsText(String) for spring's form select list?

I have a spring form. The form contains a select list that is bound to an enum type. I have also added a "choose" option to the select list that ...

24. Spring MVC POST @RequestBody don't bind to JSON string in the http request

this is my signature of the POST method of my Spring MVC controller

@RequestMapping(value="/createNewGame", method=RequestMethod.POST)
       public ModelAndView createNewGame(@RequestParam(value="phoneNumber") String param,@RequestBody final SampleDTO sampleDTO) {

25. Why doesn't Autowiring work for this Spring MVC String bean property?

private String defaultLanguage;
When I try to @Autowire the defaultLanguage field of the CountryBean class as follows:
<beans:bean id="countryBean" class="geoapp.CountryBean">
    <beans:property name="defaultLanguage" value="English" />
I get this error:
Error creating bean with ...

26. How to implement custom error string with Spring's @ExceptionHandler?

In a web controller I have an @ExceptionHandler implementation to handle a certain type of device exception I can get. It looks like this :


27. Can Jackson be configured to trim leading/trailing whitespace from all string properties?

Example JSON (note that the string has trailing spaces):

{ "aNumber": 0, "aString": "string   " }
Ideally, the deserialised instance would have an aString property with a value of "string" ...

28. How to return a simple xml string from a form post in Spring MVC

I've got a simple http POST action in Spring MVC and I don't need to return a full web page. Instead I just need to return an xml string (for example) true But ...

29. Unable to convert XMLBean object to jSON string using Springframework

Controller returns an xml bean object by calling the ModelAndView constructor:

File file = new File("C:/files/DataServiceResponseSchema.xml");
DataServiceResponseDocument dataServiceResponseDoc = DataServiceResponseDocument.Factory.parse(file);
return new ModelAndView(XML_VIEW_NAME, "DataServiceResponseDoc", dataServiceResponseDoc);
The spring configuration file to handle json and xml view ...

30. Is it possible to use a value for a @RequestMapping that is a String but not a String literal?

Is there a way to use an Enum value in a RequestMapping?

@RequestMapping(value = "/example", 
method = RequestMethod.POST)
public final void foo(final HttpServletResponse response,
I want to use a URL value that is already ...

31. Display String array in spring MVC

I am trying to display string array in JSP page. I have got a test String array in my controller set this to my registration model

String[] test={"ab","cb","sc","ad"};
Now I am trying to display ...

32. How to extract an object from Model using a concat String

How to extract an object from Model using a concat String Hello everybody... I'm dealing with the following problem... I have a controller that puts some values in the model based ...